Improved machine for heading- bolts



'iateui i wW-eaeaem me `IOHN R. ABBE, OE PROVIDENCE, RHODE ISLAND.

Letters Patent No. 85,983, dated .Tamm/ry 19, 1869.

To all whom it may concern.-

Be it known that I, J oHN R. ABBE, of Providence, in the county ofProvidence, and State of Rhode Island, have invented a new and usefulImprovement in Bolt- Heading Machines, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawing, forming part of this speciiica-A tion, and in which- Figure Ilrepresentsa plan of a bolt-heading machine constructed in accordancewith my improvement, and

Figure 2, a longitudinal sectional'elevation of the same.

Similar letters of reference indicate corresponding parts.

. My invention consistsv in a combination, with stationary dies thatconstitute a formen of an intermittently-reciprocating upset workingtherein, and jaws which contain dies for clamping the bolt, and which,in addition to having an intermittently-reciprocating mo 'tion towardand from the stationary dies, have a swing- L ing and opening andclosing action, to facilitate the entry and discharge of the bolt withinand from them; the upset and jaws having their intermittently-reciperocating motions communicated to them through sliding heads or frames bya revolving grooved cam orcams attached to a shaft, arranged to runlengthwise of the machine, while the swinging and opening and closingmotions of the jaws .are eiiected by turning supports to them, through aslot made in one of the supports, acting against a pin fixed to the bed.

In the accompanying drawing, A is the bed of the machine, supported onor by suitable up'rights, B.

Arranged to run longitudinally of the machine, and working in bearingsmade in the uprights B, is a main or general driving-shaft,`O, on whichis hung a grooved cam or cams, D D".

The one, D, of these cams, serves to give intermittently-reciprocatingmotions, through a pin, a, vfitting the groove in said cam, to aframe orhead, E,arranged to slide longitudinally of the bed, within or on waysconnected therewith. v

rlhis head E carries'theupset F', which is made adjustablelongitudinally by a back-screw, b. The frontA end of said upset isdished or chamfered, to give the necessary chamfer to the bolt-head.

G G are stationary dies arranged between.' blocks c c, which areprovided with screws d d, for the purpose of adjusting or setting saiddies relatively to each other. These dies G G constitute the for1ner,andare of an internal configuration; intheir transverse section',corresponding to the cross-section of the upset, and of the shape of thehead to be made on the bolt. The upset ,F works, as it is intermittentlyreciprocated, through said dies or formen that is of a shape and size tosnugly yet freely fit said dies.` y

The cam D serves to give intermittently-reciprocating. metion ormotions, through a pin, e, fitting the groove in said cam, to a head orplate, H, also arranged p to slide longitudinally of the bed, within oron ways connected therewith..

This head or plate H serves to carry the bolt-holding -clamps or jaws II', which are fitted with suitable dies, j, covered by cap-platesforgriping the bolt in l between them.

The one, I, of these jaws, both of which may be reversible, withdifferent-sized grooves in their faces, to suit diierent-sized bolts, isformed of or by a projection from a supporting-table or plate, J, whichis-let into the head, H, as at g, so as to Atravel along with said head,but so that it is capable of being turned horizontally around the pin cas a centre.

The` other jaw, I', forms a similar projection from asupporting-table,.J, which is arranged to turn in or on,

into a notch in the edge of the lower table J, to hold the table fromturning when the jaws are closed and in line with or facing the formenThe upper table, J has aslot, M, made in it, at or near its back, on oneside of its cent-re, said slot-terminating, at its outer end, in a mouthor opening, m.

N N are stops, provided with adjusting-screws. n n, vto arrest, at theproper time, the forward movement of the jaws or` tables which carrythem.

The cams D D are adjustable, by nuts S S, on or along the shaft O, toadjust or vary the pressure of the vupset F on the bar, and the feed ofthe jaws I I up against the stationary dies G G.

To insert the bar or rod k, or to deliver the bolt made therefromthrough the dies of the jaws I I', the latter, with their tables J J',are turned as indicated by red lines in fig. l, which action isaccomplished, each back feed of the head, H, by the mouth m of the slotM receiving within or through it a stationary pin, R, that, in beingstruck by the inner edge ofthe slot M, effects the turning of the uppertable, J to the position shown in redliues, said edge of, the slottravelling against or over the pin R, and said table acting against thejaw I of the under table, J, to simultaneously turn it. The jaws, inthus being turned out of line withthe dies G G`or upset F, are alsoopened, by a slight play established between the upper table, J and jawof the under table, and drag of the spring on the latter.

The bar or rod k having been inserted, the succeed# ing forward movementof the head or plate H, through the action of the cam D on the pin R,causes the outer edge ofthe slot M to bear or rub over the pin R, audthereby to close the jaws on the bar, and to turu them back to face thedies G G, whichl is the position reprej 'sented for them by bia/klimwandin this position they are held, after the mout-hm of the slot M has leftthel pin R, by the spring L shooting into the notch in the edge of thelower table,

The cams D D are so grooved or formed as tosecure thefollowing action ofthe jaws I I 'and upset F, in relation to each other, in heading .thebolt within the former or dies G G, and after the head has been formed,to vsecure its retirement therefrom.

Thejawshaving been closed and turned, to gripe the rod or bar, and tobring it in line with the upset, are

' moved up towardor against the face of the dies G G.,

which projects the rod into the formen where it i remains, while theupset F advances to form the :head

ori-'the bolt, the irpset preferably remaining stationary a shortinterval, while the head is beingformed,v after which the jaws mve in aback direction, andthe upset F follows in the samecourse, to pushthe'bolt, bypressure on its head, out'o 'the former or dies G G. A

further-continued back movement of the jaws eects the turning andopening of them, as hereinbefore de` scribed,to admit of the headed boltbeing removed,

and a fresh baror `rod inserted, the upset F, in the.

mean time, retiring, to repeat the'headingoperation on the next advancemovement of the jaws.y v

A machine thus constructed and operating, has the pressure requisite forheading distributed over numerous parts, and bolts may be made or headedwithout fins on them, while every facility is afforded, in an automaticmanner, for insertion of the rods or bars, also removal of the headedbolt, and all necessary adjustments by the several screws, or, it maybe, wedges prov

